Building Envelope Wind Design for Low-Rise Commercial Buildings

In Building Envelope Wind Design for Low-Rise Commercial Buildings, you'll learn ...

• The distinction between components and cladding (C and C) wind design and main wind-force-resisting system (MWFRS) wind design for low-rise commercial buildings
• The application of ASCE/SEI 7-22 Chapter 30 procedures to building-envelope wind design
• The evaluation of wind pressures, pressure zones, and load paths affecting roof and wall envelope systems
• How to prepare clear, defensible, and review-ready C and C wind design documentation and pressure schedules

Overview

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Credit: 3 PDH

Length: 25 pages

In low-rise commercial buildings, wind-related damage often begins at the building envelope long before the primary structural frame reaches its design limit. Roof panels, wall panels, girts, purlins, fasteners, windows, personnel doors, overhead doors, mullions, edge zones, and corner zones can experience local C and C pressures that are significantly higher than the pressures used for the main wind-force-resisting system. For that reason, a clear and reviewable C and C pressure schedule is not a secondary calculation; it is a critical part of wind-resistant building-envelope design.

This course provides a practical engineering treatment of components and cladding (C and C) wind design for low-rise commercial buildings in accordance with ASCE/SEI 7-22. The course focuses on the building-envelope elements most commonly encountered in commercial, warehouse, retail, and light-industrial projects, including roof panels, wall panels, secondary framing members, fasteners, windows, doors, overhead doors, mullions, roof edge zones, roof corner zones, wall corner regions, and pressure schedules used in design documentation, delegated design criteria, product submittals, and plan review.

The material is written for practicing civil and structural engineers who already understand the purpose of wind design but need a disciplined, defensible method for applying ASCE/SEI 7-22 Chapter 30 to actual envelope elements. The course uses SI units throughout and develops the design logic from applicability, wind parameters, effective wind area, pressure zones, external and internal pressure coefficients, and pressure-to-force conversion through complete worked examples.

The course intentionally excludes rooftop mechanical equipment, solar arrays, freestanding signs, canopies, wind tunnel testing, tornado design, and global MWFRS design. Those subjects are different wind-design scopes. The present course is limited to building-envelope C and C to maintain a focused technical treatment of the envelope elements most frequently involved in design coordination, delegated submittals, product selection, plan review comments, and post-event wind damage observations.

Specific Knowledge or Skill Obtained

This course teaches the following specific knowledge and skills:

• The building-envelope elements governed by ASCE/SEI 7-22 Chapter 30, including panels, openings, fasteners, and secondary framing
• The determination of wind parameters, enclosure classifications, and velocity pressures used in C and C calculations
• The calculation of effective wind areas for panels, framing members, openings, and fasteners
• The identification and application of wall and roof pressure zones in low-rise commercial buildings
• The selection and use of external and internal pressure coefficients to determine net design pressures
• The calculation of wall and roof C and C pressures for flat-roof and low-slope gable-roof buildings
• The evaluation of wind pressure demands on windows, personnel doors, overhead doors, mullions, and storefront systems
• The conversion of design pressures into attachment forces, fastener demands, and member line loads
• The treatment of members crossing multiple pressure zones and the appropriate application of segmented, weighted, or conservative loading approaches
• How to develop professional pressure schedules and delegated-design criteria that support plan review, product selection, and quality control

Certificate of Completion

You will be able to immediately print a certificate of completion after passing a multiple-choice quiz consisting of 20 questions. PDH credits are not awarded until the course is completed and quiz is passed.